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Adv. Vas. Son.

Test 1 Superficial vein mapping

QuestionAnswer
What is duplex ultrasound used for? Assess the competency of superficial veins for use as a bypass graft and Mark the route of superficial veins prior to ablation
What are the different bypass grafts that superficial veins can be used for? Coronary bypass grafting. Lower Extremity bypass grafting. Hemodialysis access to fistulas
What information is gathered about the superficial veins ? Patency, size, depth, and position
Vein mapping allows for: selection of optimal vein, can alter planned surgery and surgical approach and minimize the amount of surgical dissection
What are some alternatives to markers for vein mapping? Coffee stirrers or straws that can indent the skin
What is a vein mapping alternative? Apply a strip of tape on the side of the TD, mark center of TD, Put the vein the center in the U/S field of view (don't zoom), create an indention on the skin over the vein @ the mark of the TD, repeat until you're done, Connect the "dots" W/ a marker
What do you do in double systems when vein mapping? Mark the accessory (smaller) vein with a dotted line instead of solid line
What TD? High Frew TD @ least 10 MHz
Vein mapping provides what info? Info about the presence/absence of vein, and also the suitability of vein for use as a conduit
Generally most surgeons will not use a vein with a diameter less than what? <2mm
What is the preferred diameter of the veins? 2.5-3 mm
Created by: EmilyGriffin
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